In pursuing a high-stakes deal or just asking for a raise, using the right phrases matters. Herb Cohen, author of "Negotiate This," and advisor to presidents Carter and Reagan, shares his best lines.

• "How did you come up with that number?" Opens a window into the other side's thoughts.
• "Where were we?" Look like you care, but not that much.
• "Let me check with my wife." Or my husband, my boss, my banker. Stops you from saying yes prematurely.
• "Huh? Wha?" Pretend you don't understand, and others will talk.
• "If things change, give me a call." Be willing to walk away--and put the burden on them.